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Extends: undici.Client

A mock client class that implements the same api as MockPool.

new MockClient(origin, options?): void

Arguments:

  • origin string - It should only include the protocol, hostname, and port.
  • options MockClientOptions - It extends the Client options.

Returns: MockClient

Extends: ClientOptions

  • agent Agent - the agent to associate this MockClient with.

We can use MockAgent to instantiate a MockClient ready to be used to intercept specified requests. It will not do anything until registered as the agent to use and any mock request are registered.

import { MockAgent } from 'undici'

// Connections must be set to 1 to return a MockClient instance
const mockAgent = new MockAgent({ connections: 1 })

const mockClient = mockAgent.get('http://localhost:3000')
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MockClient.intercept(options): void

Implements: MockPool.intercept(options)

MockClient.cleanMocks(): void

Implements: MockPool.cleanMocks()

MockClient.close(): void

Implements: MockPool.close()

MockClient.dispatch(options, handlers): void

Implements Dispatcher.dispatch(options, handlers).

MockClient.request(options, callback?): void

See Dispatcher.request(options [, callback]).

import { MockAgent } from 'undici'

const mockAgent = new MockAgent({ connections: 1 })

const mockClient = mockAgent.get('http://localhost:3000')
mockClient.intercept({ path: '/foo' }).reply(200, 'foo')

const {
  statusCode,
  body
} = await mockClient.request({
  origin: 'http://localhost:3000',
  path: '/foo',
  method: 'GET'
})

console.log('response received', statusCode) // response received 200

for await (const data of body) {
  console.log('data', data.toString('utf8')) // data foo
}
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